Age Limit:
The age limit for candidates appearing in the DSSSB TGT/PGT/PRT exam is as follows:

1. For TGT (Trained Graduate Teacher) Posts:
- The minimum age limit is 21 years.
- The maximum age limit is 32 years.

2. For PGT (Post Graduate Teacher) Posts:
- The minimum age limit is 21 years.
- The maximum age limit is 36 years.

3. For PRT (Primary Teacher) Posts:
- The minimum age limit is 18 years.
- The maximum age limit is 30 years.

Relaxation Criteria:
The relaxation criteria for candidates appearing in the DSSSB TGT/PGT/PRT exam are as follows:

1. Age Relaxation for SC/ST Candidates:
- SC/ST candidates are provided with a relaxation of 5 years in the upper age limit.

2. Age Relaxation for OBC Candidates:
- OBC candidates are provided with a relaxation of 3 years in the upper age limit.

3. Age Relaxation for PWD Candidates:
- PWD (Persons with Disabilities) candidates are provided with a relaxation of 10 years in the upper age limit for general category candidates.
- PWD candidates belonging to SC/ST category are provided with a relaxation of 15 years in the upper age limit.
- PWD candidates belonging to OBC category are provided with a relaxation of 13 years in the upper age limit.

4. Age Relaxation for Departmental Candidates:
- Departmental candidates who have rendered at least 3 years of continuous service in the Government of NCT of Delhi are provided with a relaxation of up to 5 years in the upper age limit.

Note:
- The age relaxation is applicable as per the guidelines of the Government of India.
- Candidates belonging to reserved categories (SC/ST/OBC/PWD) need to submit relevant documents as proof for availing the age relaxation benefits.
- The age limit and relaxation criteria may vary for different categories and posts, so it is advisable for candidates to refer to the official notification of DSSSB for accurate and up-to-date information.