The Colchester Board of Education has asked members of the local teachers union to take a wage freeze as the BOE’s health reserve fund potentially faces a $1 million shortfall because of increased health claims and faulty monitoring of the fund due to bad data, according to the Superintendent’s budget presentation and a statement issued by Colchester First Selectman Bernie Dennler and Board of Education Chair Stefanie Tracey-Calash. Colchester i…