Фондация "Младен и Мария Антонови"
| Year | Teachers | Pupils |
| 1962 - September | teachers | 80 |
| 1963 - June | 23-people staff – 14-people pedagogical staff and 9-people not pedagogical staff | |
| 1963 - September | 32-people staff – people pedagogical staff and people not pedagogical staff | |
| 1964 - September | 44-people staff – people pedagogical staff and people not pedagogical staff | |
| 1966/1967 | 12 classes | |
| 1973/1974 | ||
| 1976 | 85-people staff – 37 teachers, 22 educators, 8 people subsidiary staff and 13 people other type of staff | 299 pupils divided in 22 classes, 8 of which elementary school and 14 – junior high school |
| 1987 | 98 high-qualified teachers | 30 classes from I to VIII grade |