Prospective teachers will soon have to achieve higher test scores to be admitted to teacher-training programs in Rhode Island. "Teacher quality is the single most important factor for student success in school,"said Deborah A. Gist,the state's new education commissioner. "This is a first step in raising our expectations across the board for our educators and our system." Rhode Island's "cut score" had been among the lowest nationwide but will now be the highest. Some fear teacher candidates may not be able to meet the standard and had hoped for incremental increases.