Full Metal Panic! soloes. It's also got some mecha stuff thrown in there.
IMDb rated School Rumble higher.
Yeah I saw that but I like Baka to test plot more. Here it is:
The story centers around a boy named Akihisa Yoshii, the titular baka (idiot) of the story. He attends Fumizuki Academy in Japan, a school where the staff rigidly divides the students based on the results of their academic scores. At the start of the school, students are academically sorted by entrance exam test grades. The higher the grades, the higher the class, and the better the benefits. In this case, Class A is filled with the highest-scoring students; therefore, their classroom is filled with many prestigious items (air conditioners, fancy seats, laptops, a free snack bar, etc.), while the state of Class F is the complete opposite of that, representing the "bottom of the barrel" amenities, such as mats and low wooden tables.The story also loosely revolves around the love triangle consisting of Mizuki Himeji (an intelligent girl who was forced into Class F just because of a fever), Minami Shimada (a transfer student from Germany who struggles with kanji very much), and Akihisa, their crush.
Fumizuki Academy has a special system, whereby all the students are able to call forth Summoned Beings. These Beings are used for battles between classes with the goal of capturing (or retaining) the best classroom facilities