| Boys | Girls | |
| Stage one | PrepubertalNo sexual development | PrepubertalNo sexual development |
| Stage two | Testes enlargeBody odor | Breast buddingFirst pubic hair Body odor Height spurt |
| Stage three | Penis enlargesPubic hair starts growing Ejaculation (wet dreams) | Breasts enlargePubic hair darkens, becomes curlier Vaginal discharge |
| Stage four | Continued enlargement of testes and penisPenis and scrotal sac deepen in color Pubic hair curlier and coarser Height spurt Male breast development | Onset of menstruationNipple is distinct from areola |
| Stage five | Fully mature adult Pubic hair extends to inner thighsIncreases in height slow, then stop | Fully mature femalePubic hair extends to inner thighs Increases in height slow, then stop |
