The particle は after the phrase "Placeで" presents the place where an event is held as a topic of the sentence.
(わたしたちの)がっこうでは まいにち しけんが あります。
At our school tests are given every day.
Lesson 9-3「あした、たいしかんで パーティーが あります。」
Tomorrow there will be a party at the Embassy.