Suzumiya Haruhi no Yuuutsu, Toki wo Kakeru Shoujo Recommendations
Both deal with a group of highschool students as well as a supernatural factor (particularly time travel). I found both animes had likeable characters and a unique plot. If your into coming of age stories with a twist on the supernatural, with interesting characters than you will most likely like these two animes.
Ordinary school life of the main characters and time traveling, both very interesting.