After you have got the approval in the new school,a new pf account has to be opened in your new school and your pf amount should be deducted from your first month salary.Then you have to apply to the HM of your old school,on the basis of which he will apply to the DI who will offer you a cheque mentioning principal along with interest and financial year.Then submit the cheque to the bank.After it is materialized submit the same amount to the treasury office in T.R.7 Form.This same amount has to be inserted in your new pf account.Thanks.