Applicability of pf

DEAR SIR

WE RUN A CHARITABLE AND EDUCATIONAL TRUST.

THE TRUST IS RUNNING THE FOLLOWING INSTITUTIONS

1. primary school : 1 : 14 Employees

2. Primary school : 2  7 Employees

3. Primary School : 3 6 employees

4. Secondary School :  11 employees

5. Industrial training institute : 2 employees

all the institutes are seperate and have seperate bank accounts.

is PF act applicable to the trust of institutes.

thanks in advance