Так, вроде лицом к ученикам стоит в 1 книге, тогда порядок столов немного меняется

note: in PS7, the table positions differ slightly. When Harry stands in front of the High Table, facing the students, he sees the Hufflepuff table on the right, Ravenclaw as second from the left, and Gryffindor on the far left. That makes the order in 1991 (starting from the doors): Hufflepuff, Slytherin, Ravenclaw, and Gryffindor. Apparently they changed places by 1994.