(Centerville, IN)--It’s hard to believe, but school was back in session Monday morning for some Whitewater Valley students. Students at Centerville-Abington schools returned to the classroom Monday. Centerville’s incoming kindergarten class is decidedly smaller this year. Last year, about 140 kids entered as kindergartners. This year, that number is only 99. Eight new teachers are beginning at Centerville on Monday. Richmond, Northeastern, Western Wayne and Nettle Creek are among the school districts that will return on Wednesday.