Conversion order mentions it is for amusement park 

2) you have built school and not amusement park 

3) you need orders for use of premises for educational purposes 

4) file RTI application as to why your application has not been processed tilldate 

It need to see for what purpose the layout plan has been sanctioned by Bangalore Municipal Corporation. for School or Educational Commercial purpose.  

File a RTI application to know the status of your application . Since already the property is converted to commercial and the fee is paid the order can be passed and the use can be rectified to educational.

The applicant would have to submit an online request regarding the details of land along with its survey number as well as an affidavit.

Dear Client,

Conversion from GREEN BELT is restricted but under The Karnataka Land Reforms Act permits in certain cases, special permission to be given by the Deputy Commissioner, for purposes like schools, hospitals, libraries, sports clubs, cultural buildings, exhibition centres, low income housing, temples, etc. When this permission is applied for, an N.O.C. from the B.D.A. is required. 

Here issue is minor - already commercial - all required is amusement to educational - no prior permission -  penalty will be paid. Until application not rejected, no issue, in case rejected can file appeal against the order. Fair chances of success.

1.  File proper application for change of status with the district collector, supported by all relevant documentations.

You have to follow it up with the authorities concerned.

You make sure that why it is delayed and where it is held up.

As per Karnataka Munipalities model bye laws 2017 and educational building is defined as:

‘Educational Building’- Includes a building exclusively used for a school or college,
recognized by the appropriate Board or University, or any other Competent Authority
involving assembly for instruction, education or recreation incidental to educational use,
and including a building for such other uses as research institution. It shall also include
quarters for essential staff required to reside in the premises, and building used as a hostel
captive to an educational institution whether situated in its campus or outside.

Have you folowed the norms for this including approaval of the plan and also the regularisation formality.

Without knowing the status of your application for this conversion, no legal opinion can be rendered because the hideen facts are not known

Dear Sir,

If the concerned authorities delaying, then approach High Court seeking time bond direction within which the concerned Deputy Commissioner pass necessary orders.