AP Police Constable vs SI: Which Is Right for You? Eligibility, Exams, Pay and Career Compared

Many Andhra Pradesh aspirants arrive at the same question every recruitment cycle: constable or sub-inspector? The honest answer is that neither is better in the abstract. They differ in the education they ask for, the age window they allow, the length and difficulty of the exam, the pay scale and the responsibility on the job. The right choice depends on your qualification, your date of birth, how many months you can study, and how comfortable you are with writing long answers. This guide compares the two posts side by side using the official notifications of the State Level Police Recruitment Board (SLPRB), so the decision rests on documented numbers.

The comparison uses SCT Police Constable (Civil), post code 21, from notification Rc.No.91/SLPRB/Rect.2/2026, and SCT Sub-Inspector (Civil), post code 11, from Rc.No.81/SLPRB/Rect.1/2026. Both were issued on 16 September 2026, and the facts below are as on October 2026. Vacancies are provisional and the Board can change them, so check slprb.ap.gov.in before acting. Full details are in the AP Police Constable guide and the AP Police SI guide. For pay and duty life of the constable post, see AP Police Constable salary and job profile. For the wider state recruitment picture, see the Andhra Pradesh government exams 2026 guide.

1. The comparison in one table

Item	Constable (Civil), code 21	SI (Civil), code 11
Provisional vacancies	542	253
Minimum education	Intermediate or equivalent	Any degree
Age on 1 July 2026	18 to below 24	21 to below 27
Born between	2 July 2002 and 1 July 2008	2 July 1999 and 1 July 2005
Preliminary test	1 paper, 200 questions, 200 marks, 3 hours	2 papers of 100 questions each, 3 hours each
Preliminary qualifying marks	40% OC, 35% BC, 30% SC and ST	The same, in each paper separately
PMT	Height, chest (men); height, weight (women)	The same standards
PET	1600 m plus 100 m or long jump; qualifying	The same; qualifying
Final written test	1 paper, 200 questions, 3 hours	4 papers, 3 hours each
Merit built on	Final paper, 200 marks	Papers III and IV, 400 marks
Language papers	None	English and Telugu or Urdu, descriptive, qualifying
Pay scale	Rs 25,220 to Rs 80,910	Rs 44,570 to Rs 1,27,480
Fee (OC and BC)	Rs 300	Rs 600
Fee (SC and ST)	Rs 150	Rs 300
Women reservation	33 1/3 per cent of each category	33 1/3 per cent of each category

Both notifications also cover Armed Reserve (AR) posts, and the SI notification includes a Special Protection Force post. This comparison stays with the Civil posts, because that is where most aspirants are choosing. A summary of how AR differs appears later.

2. Education and age: the filter that decides for many people

Education and age are the first and often the only filter. The decision is made for you in several common situations.

Your situation	What the notifications imply
Intermediate passed, no degree, age within 24	Constable only
Degree in hand, age below 24	Eligible for both
Degree in hand, age 24 to 26 (general category)	SI only, unless a relaxation applies for constable
Degree in hand, age 27 or above (general)	Neither, unless a relaxation applies
BC (NCL), SC, ST or EWS, age up to 28	Constable is possible with the 5-year relaxation
BC (NCL), SC, ST or EWS, age up to 31	SI is possible with the 5-year relaxation

"Age 24 or 27" in the table means that you must not have attained that age on 1 July 2026. The 28 and 31 limits for relaxed categories are our own arithmetic from the five-year relaxation and should be confirmed against the notification. Other relaxations also exist: State Government employees up to five years of regular service, ex-servicemen service plus three years, whole-time NCC instructors service plus three years. A woman who is a widow, divorced or judicially separated and has not remarried has a higher ceiling in the constable notification: below 42 for SC and ST and below 37 for others. Home Guards who meet the stated service condition can apply for the constable post up to age 32.

Education has two further details. A graduate may apply for the constable post, since the notification says those with higher qualification are considered along with those having the prescribed one. For the SI post, a degree is required as on 1 July 2026, except that SC and ST candidates who have passed Intermediate and are studying for a degree are allowed. Degrees from open or distance universities need Distance Education Council recognition.

Two short examples. A 22-year-old graduate can apply for both posts, and such a candidate often builds a single plan that serves both. A 25-year-old general-category graduate has already passed the constable age limit and has two years of eligibility left for SI, which makes the SI decision both a preference and a deadline.

3. The exam stages compared

Both posts follow the same four-step sequence: a preliminary written test, a Physical Measurements Test (PMT), a Physical Efficiency Test (PET) and a final written examination. The first three behave as gates. Only the final written test builds the merit list. That one fact explains most of the strategy.

Preliminary test

For constables it is one 200-question paper in three hours, at Intermediate standard, covering English, arithmetic, reasoning, general science, history, geography, polity, economy and current events. For SI it is two separate three-hour papers: arithmetic and reasoning at SSC standard (100 questions), and General Studies at degree standard (100 questions). The SI candidate must qualify in each paper separately, and a failure in one paper ends the candidature even if the other paper is excellent. A constable candidate needs to clear a single percentage on one paper. In both cases, the marks do not count towards final selection.

Final written test

For constables the final test is another single 200-question paper in three hours, and the score decides merit. For SI the final test has four papers:

• Paper I English, descriptive, 100 marks, qualifying.
• Paper II Telugu or Urdu, descriptive, 100 marks, qualifying.
• Paper III arithmetic and reasoning, objective, 200 questions, 200 marks, counted in merit.
• Paper IV General Studies, objective, 200 questions, 200 marks, counted in merit.

The SI candidate has to clear 40 per cent (OC), 35 per cent (BC) or 30 per cent (SC and ST) in every paper. Merit is the aggregate of Papers III and IV, which is 400 marks. If Papers I and II are failed, no mark in III and IV rescues the candidature. This is the single most important difference. The constable test is entirely objective, whereas the SI test additionally asks you to write essays, comprehension answers, precis, letters and reports in English and Telugu (or Urdu), and to translate. Candidates who read a lot but seldom write often underestimate it.

Physical tests

The standards are the same for both civil posts. Men need 167.6 cm height and 86.3 cm chest with 5 cm expansion. Women need 152.5 cm height and 40 kg weight. Aboriginal Scheduled Tribe candidates of the listed agency areas have lower thresholds: 160 cm height with 80 cm chest and 3 cm expansion for men, and 150 cm and 38 kg for women. In the PET, men and women must qualify in the 1600 metre run (8 minutes general, 9 minutes 30 seconds ex-servicemen, 10 minutes 30 seconds women) and in one of the 100 metre run (15, 16.5 and 18 seconds) or the long jump (3.80, 3.65 and 2.75 metres). These are qualifying events for both civil posts. Electronic timing is used, spike shoes are not allowed, and there is no re-test once an event is conducted.

So physical preparation is shared. Do it once and it serves both.

4. Pay, training and benefits

The Scale of Pay is Rs 25,220 to Rs 80,910 for constables and Rs 44,570 to Rs 1,27,480 for sub-inspectors under the Revised Pay Scale 2022. A scale is a range over a career with annual increments, not a first-day salary, and allowances such as dearness allowance and house rent allowance depend on government orders and the place of posting. The notifications do not give take-home figures.

Item	Constable	SI
Scale of pay	Rs 25,220 to Rs 80,910	Rs 44,570 to Rs 1,27,480
Training	Stipend fixed by Government	Stipend fixed by Government
After training	Regular time scale	Regular time scale
Pension	Contributory Pension Scheme for those appointed on or after 1 September 2004	The same

The notifications give no stipend amount or training duration for either post. Treat any such number you see on social media as unverified until you find an official order.

5. Competition and difficulty, honestly stated

It is natural to ask which post is harder. Without official data on applicant numbers for this cycle, it is not possible to give a true ratio, and it would be wrong to quote one. What can be compared is structure.

• Constable vacancies (542 provisional) outnumber SI vacancies (253), but the constable post is open to a much larger pool of candidates, since Intermediate is enough.
• SI is harder as an exam: higher standard in General Studies, two additional descriptive papers and the need to qualify in every paper.
• Constable demands speed and accuracy in a single large paper and, practically, a very strong physical result, because everyone who reaches the final stage has already cleared the same PMT and PET.

Also remember that 95 per cent of posts go to local candidates, with only the first 5 per cent filled on open merit among locals and non-locals. Check the district or zone distribution for your own area, since constable vacancies are listed district-wise (with a separate backlog column for local candidates), and SI vacancies are listed zone-wise across six zones.

6. Job profile and responsibility

The notifications do not describe duties, so the following is general understanding and varies by posting. A constable works at the first line of policing: patrol and beat duty, bandobast at gatherings and festivals, traffic duty, guarding, serving notices and summons, escorting accused persons, court duty and assisting senior officers. An SI is an officer at the station: receiving complaints, registering cases, investigating, supervising the staff, managing the station's records and maintaining law and order in an area. The SI carries more legal responsibility and more accountability, and the working hours are not lighter. In both posts, long and irregular hours, festival duties, election duties and transfers are routine.

The ladder above the entry post can be read from the notifications themselves. The Police Executive quota speaks of constables, head constables and assistant sub-inspectors, and the quota for children of police personnel speaks of the rank of Inspector. The general sequence is therefore constable, head constable, assistant sub-inspector, sub-inspector and inspector. How long each step takes depends on vacancies and service rules, and no honest source can promise a number of years.

7. Can a constable become an SI?

There are two routes. The first is regular departmental promotion, whose rules are not in the recruitment notifications and so are not described here. The second is the Police Executive (PE) quota inside the SI recruitment itself.

• The SI (Civil) notification reserves 5 per cent of posts for Police Executive candidates and 1 per cent for Police Ministerial candidates, adjusted horizontally within communal categories.
• PE eligibility: police constables, head constables and assistant sub-inspectors in the AP Police who are approved probationers with three years of service on the notification date. Time as a stipendiary cadet trainee is not counted.
• Not eligible for the quota: anyone with a major punishment, three or more minor punishments, a punishment in operation, suspension or a pending oral enquiry, desertion, or compulsory retirement or removal.
• These candidates still take every test and must reach the qualifying marks of their communal category. The quota only reserves seats. The upper age limit still applies, with State Government service relaxation up to five years.

It would be risky to plan "join as constable now and become SI later" as a guaranteed path. The quota is a percentage of that year's vacancies and the notification can change.

8. A quick look at the AR variants

Each notification also carries an Armed Reserve post: SCT PC (AR), code 22, with 285 vacancies, and SCT RSI (AR), code 12, with 116 vacancies. The difference is in the physical test and merit. For AR, men and women must qualify in all three PET events and are scored out of 100 marks (40 for the 1600 metre run, 30 for the 100 metre run, 30 for the long jump). For AR constables, final merit is 100 marks from the written paper (200 questions graded for 100) plus 100 PET marks. For RSI (AR), merit is Paper III (100) plus Paper IV (100) plus PET (100), a total of 300. Women reservation is 20 per cent for AR instead of 33 1/3 per cent. If you pick AR, you train for performance in every event, not just for the minimum.

9. How much time does each need?

These are our own planning estimates, not Board figures, and they depend on your starting level.

Item	Constable	SI
Written preparation from scratch	Roughly 4 to 6 months	Roughly 8 to 12 months
Physical preparation	Start early, a few months before	The same
Writing practice	Not needed	Needed weekly
Daily study (a suggestion)	4 to 5 hours plus training	5 to 6 hours plus training
Heaviest parts	Speed in arithmetic and reasoning	Depth in General Studies and written English and Telugu

The notification has not announced dates, so you do not yet know how much time you have. Use that window to build foundations that serve both posts.

10. How to prepare for both together

The syllabus overlap is large. Arithmetic at SSC standard and reasoning appear in both. General science, Indian history and the national movement, geography, polity, economy and current events appear in both, at Intermediate standard for constables and degree standard for SI. English appears in both, as objective questions for constables and as a descriptive paper for SI.

Subject	Constable	SI
English	Objective questions	Descriptive paper, degree standard
Telugu or Urdu	Not tested	Descriptive paper, qualifying
Arithmetic (SSC)	Yes	Paper III
Reasoning	Yes	Paper III
General science	Yes	Paper IV
History, culture, national movement	Yes	Paper IV
Geography, polity, economy	Yes	Paper IV
Current events	Yes	Paper IV

A sequence that works for a graduate preparing for both:

1. Foundations (first two months): arithmetic tables, fractions, percentage; reasoning series and coding; school science; and daily running.
2. Coverage (next three months): general studies blocks plus weekly current affairs. Take weekly sectional tests.
3. Writing (alongside, if SI is a target): one essay and one letter a week in English and Telugu, plus a monthly evaluation.
4. Simulation (final stretch): 200-question mixed papers in three hours for the constable pattern; two 100-question papers for the SI preliminary; and then two 200-question papers (arithmetic-reasoning and General Studies) for the SI final.
5. Physical: continuous throughout, with a full event rehearsal every two weeks near the end.

For General Studies depth with an Andhra Pradesh flavour, the AP geography notes, AP polity and Panchayati Raj notes, AP economy and budget notes and AP government schemes notes are helpful background, though the official syllabus does not contain a dedicated state paper.

11. Reservation and local rules that apply to both

• Women: 33 1/3 per cent of each communal category (Civil posts).
• Communal categories: EWS, BC-A to BC-E, SC (Groups I to III) and ST. NCL certificates and EWS certificates must be issued on or after 1 April 2026.
• Local candidates: first 5 per cent open merit, remaining 95 per cent for local candidates.
• Special categories: for constables, Home Guards 15 per cent, Children of Police Personnel 4 per cent, Meritorious Sportspersons 3 per cent, NCC 3 per cent, Ex-Servicemen 2 per cent and Children of deceased or incapacitated police 2 per cent. For SI, Police Executive 5 per cent, Meritorious Sportspersons 3 per cent, NCC 3 per cent, Ex-Servicemen 2 per cent, Children of Police Personnel 2 per cent, Children of deceased or incapacitated police 2 per cent and Police Ministerial 1 per cent.

12. Decision guide: ask yourself five questions

1. Do I qualify on education and age? The table in section 2 may already decide it.
2. How comfortable am I writing in English and Telugu? If writing under time feels hard, SI needs months of practice, while constable has no writing paper.
3. How many months can I give consistently? SI needs more.
4. Can I afford another attempt if I do not get selected? Age windows close. A 25-year-old general graduate has very few SI attempts left.
5. Is the nature of police work what I want? Shift duty, festival bandobast and transfers apply at both ranks.

Some common profiles. A recent graduate aged 22 with a love of reading and decent writing can aim at SI first and use the constable notification as a second chance, since the preparation overlaps. A 19-year-old Intermediate student should target the constable post now, and consider the SI route after a degree, if age permits. A candidate with a financial need to start earning soon may prefer the constable route because the preparation is shorter, with a single objective paper. There is no guarantee of selection either way, and no approach should rely on one single attempt.

13. Mistakes people make when choosing

1. Choosing by pay scale alone and ignoring the written depth that SI demands.
2. Ignoring age windows and discovering on the last day that one post is closed.
3. Assuming the preliminary marks matter. They do not count towards final merit, but they must clear the cut.
4. Treating the SI descriptive papers as a formality. They are pass or fail.
5. Starting running in the last month.
6. Applying with an old NCL or EWS certificate, when the notification wants one issued on or after 1 April 2026.
7. Believing a promotion timeline, a stipend amount or a cut-off number from an unofficial source.

Key facts for exams

• Constable (Civil) code 21: 542 provisional vacancies; Intermediate; 18 to below 24; Rs 25,220 to Rs 80,910.
• SI (Civil) code 11: 253 provisional vacancies; degree; 21 to below 27; Rs 44,570 to Rs 1,27,480.
• Constable prelims: one 200-question paper. SI prelims: two 100-question papers, each qualifying.
• Constable final: one 200-question paper. SI final: four papers; Papers I and II descriptive and qualifying; merit on Papers III and IV (400 marks).
• PMT and PET standards are the same for both civil posts; PET is qualifying.
• Police Executive quota in SI (Civil): 5 per cent; Police Ministerial 1 per cent.
• Fees: constable Rs 300 and Rs 150; SI Rs 600 and Rs 300.
• Local rule: first 5 per cent open, the remaining 95 per cent local.

10 practice questions

1. What is the minimum education for the SCT Police Constable (Civil) post? (A) Class 10 (B) Intermediate or equivalent (C) Degree (D) Post-graduation

2. The general age range for SCT SI (Civil) on 1 July 2026 is: (A) 18 to below 24 (B) 20 to below 25 (C) 21 to below 27 (D) 21 to below 30

3. How many questions are in the SI preliminary written test in total? (A) 100 (B) 150 (C) 200 (D) 400

4. Which of these is a qualifying paper in the SI final examination? (A) Paper III (B) Paper IV (C) Paper I (D) None of them

5. What is the pay scale minimum for the SCT SI (Civil) post? (A) Rs 25,220 (B) Rs 44,570 (C) Rs 80,910 (D) Rs 1,27,480

6. Which statement about the PET for civil posts is correct? (A) It carries 100 marks for merit (B) It is qualifying only (C) It is absent (D) It is only for women

7. The fee for an OC or BC local candidate applying for SCT SI (Civil) is: (A) Rs 150 (B) Rs 300 (C) Rs 600 (D) Rs 1,000

8. The Police Executive quota in SCT SI (Civil) is: (A) 1 per cent (B) 3 per cent (C) 5 per cent (D) 7 per cent

9. A general graduate born on 1 March 2000 on 1 July 2026 is: (A) Eligible for constable only (B) Eligible for SI only (C) Eligible for both (D) Eligible for neither

10. The SI (Civil) merit list is built on: (A) All four final papers (B) Papers I and II (C) Papers III and IV, 400 marks (D) Prelims marks

Answers

Question	Answer	Reason
1	B	Intermediate or equivalent as on 1 July 2026
2	C	Must have attained 21 and not attained 27
3	C	Two papers of 100 questions each
4	C	English, Paper I, is qualifying; Paper II is too
5	B	Rs 44,570 to Rs 1,27,480
6	B	Civil posts have a qualifying PET; AR is scored
7	C	Rs 600 for SI; SC and ST pay Rs 300
8	C	5 per cent for PE in code 11
9	B	He is 26, so over the constable limit of below 24 and within the SI limit of below 27
10	C	Papers III and IV together are 400 marks

Frequently asked questions

Which is better, constable or SI? They are different jobs. SI has a higher pay scale and more responsibility, with a harder exam and a stricter age and education requirement. Constable offers an earlier entry with a lighter written test.

Can I apply for both? They are separate notifications, so a candidate eligible for both can apply to both, subject to exam dates. Check the schedule for clashes when it is announced.

Does the SI exam have an interview? The selection scheme in the notification has no interview stage.

Are the physical tests different for SI? For the Civil posts, the PMT and PET standards are the same as for constables.

Do graduates have an advantage in the constable exam? Higher qualification is accepted but gives no extra marks in the notification.

Is there a promotion route from constable to SI? Yes, in two forms: departmental promotion under service rules, and the Police Executive quota in SI recruitment for eligible serving personnel. Neither is a guarantee.

When can I apply? Application dates will be announced by a press release on slprb.ap.gov.in.

Related reading

• AP Police Constable guide
• AP Police SI guide
• Constable salary and job profile
• Andhra Pradesh government exams 2026
• Telugu edition: AP పోలీస్ కానిస్టేబుల్ vs SI

Practise on pareeksha.in

When you have chosen a post, test your preparation under timed conditions. Pareeksha.in offers 10 Lakh+ MCQs, 100+ Exams and 5,000+ Full-Length Mocks, and you can start with the free mini mock or go to the online test series. Mocks help with pace and accuracy, and the notification stays the authority on eligibility and pattern.

Sources and verification

Opened and read for this comparison:

• State Level Police Recruitment Board, Andhra Pradesh, home page, recruitments page and press release page (slprb.ap.gov.in).
• SLPRB notification Rc.No.91/SLPRB/Rect.2/2026 dated 16 September 2026 (SCT PC Civil and AR, Firemen, Warders).
• SLPRB notification Rc.No.81/SLPRB/Rect.1/2026 dated 16 September 2026 (SCT SI Civil, RSI AR, SI SPF).

Not verified: stipend amounts, training duration, probation, allowances, departmental promotion rules and timelines, and applicant numbers for this cycle. They are left out or hedged. The relaxed-category age ceilings of 28 and 31 and the time estimates are our own calculations and suggestions, not Board data.