The Children Education Assistance Allowance should be exempted from tax

For private school teacher the two childern education which was free has been taxed now as a perk. If a DTC, Railway, airlines employee uses the same departmental facilites, Are they also taxed as a perk? If not then why teachers? plz comment and help to raise the issue.

M K Sharma,
Delhi Public School,
East of Kailash, New delhi