WALLINGFORD — A former substitute teacher charged after police say he refused to leave school property applied for a diversionary program for first time offenders. Kelly Bolling, 24, of 7 Cedar Crest Place, Norwalk, was charged Sept. 28 with second-degree threatening, interfering with police, first-degree criminal trespass and breach of peace. Bolling posted $1,500 bond.During an arraignment hearing Thursday in Meriden Superior Court, Bolling applied for accelerated rehabilitation, a program for first time offenders. The program can be granted by a judge for a time period up to two years, and the judge can impose conditions. If granted and completed, the charges would be dismissed.On Sept. 28, the principal of Pond Hill Elementary School saw Bolling texting when he was supposed to be teaching, said Lt. Cheryl Bradley. The previous day there had also been problems involving the use of ear buds at another school by Bolling. During a meeting at the end of the school day, school officials said Bolling was slurring his words and mumbling. When school officials told Bolling he would no longer be working in the school system, he refused to leave school grounds, Bradley said. When officers arrived, they searched Bolling’s backpack and found two 100 proof “nips” of rum, Bradley said.