More than 160 schools in Northern Ireland are waiting to find out if crucial building work will be carried out.
Work will only go ahead in “a small number” of those schools, according to the permanent secretary of the Department of Education, Derek Baker.
Mr Baker said that a “constrained budget” would limit the running of the school enhancement programme.
Hazelwood’s principal Kathleen O’Hare criticised what she called an “unwillingness of the civil servants to become political in making decisions”.
Hazelwood had applied for £3.9m to resolve accommodation issues, as its enrolment was due to rise to 1,010 pupils, while the school was originally built to hold 720.
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