The Short Answer
After 12th you can become a nurse through three main courses: GNM (3-year diploma, any 12th stream), B.Sc Nursing (4-year degree, 12th with PCB) and ANM (2-year diploma, community-level care). If you studied Arts or Commerce, GNM is your route to becoming a staff nurse. If you studied Biology, you can choose either GNM or B.Sc Nursing.
| ANM | GNM | B.Sc Nursing | |
|---|---|---|---|
| Type | Diploma | Diploma | Degree (university) |
| Duration | 2 years | 3 years | 4 years |
| 12th stream | Any stream | Any stream — Arts, Science, Commerce | Physics, Chemistry, Biology + English |
| Minimum marks | As per notification | 40% with English | 45% aggregate |
| Age | As per notification | 17+, no upper limit | 17+ by 31 December |
| Bihar entrance | State notification | DCECE (Para Medical) | BUHSJET |
| Work after | Community health, sub-centres | Staff nurse — hospitals, clinics | Staff nurse, higher studies, teaching |
Detailed comparisons: GNM vs B.Sc Nursing · ANM vs GNM.