£4m building work
The biggest development was at Peasmarsh Primary School, near Rye, where a 1.3m extension included new classrooms, toilets and admin blocks.
Two new children's centres have been built in Hastings and Eastbourne.
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Hide AdThe Willingdon Trees centre, in the grounds of Oakwood Primary School in Eastbourne, and the Ore Valley centre, in Hastings, had a combined cost of 1.4m.
Also in Eastbourne, the sports hall and changing rooms at The Causeway School have been extended at a cost of 1.1m.
"The council is working hard to improve services and facilities right across the county," said deputy leader Tony Reid.