College loans to more Iowa students who plan to become Iowa teachers would be forgiven under a proposed federal-state partnership. Iowa Senator Tom Harkin says the -current- state program puts 525-thousand dollars toward forgiving students’ loans. Last year, 191 students were granted the loans and 42 of them entered the Iowa workforce as teachers.Harkin proposes tripling the size of the program with one million dollars in federal funds to help an additional 350 future Iowa teachers next fall. He says the maximum loan would be for three thousand dollars a year to be forgiven over five years.Harkin says four out of every ten Iowa teachers will be eligible to retire in a decade.