Some additional details and video via the Israel Project:

The Iran-backed terrorist organization Palestinian Islamic Jihad (PIJ)’s military wing, Saraya al-Quds claimed responsibility for Qassam rockets launched at the southern Israeli town of Sderot Monday morning. The attack sent 12 kindergarten children to Ashkelon’s Barzilai Hospital to be treated for shock after a rocket struck close to their day care center. Explosions replaced the sound of school bells on Monday as Qassam rockets landed at 5:30 am and again at 7:50 am, as thousands of children arrived for their second day of school. A total of seven Quds-3 Qassam rockets fell in and around Sderot shortly before 8:30 (GMT +3). Since the opening of the Israeli school year on Sept. 2, more than 10 Qassam rockets have landed in the early morning hours near the southern city of Sderot as Gaza-based terrorist groups intentionally target children as they arrive to school. Proclaiming the attacks were “a present for the start of the new school year” on PIJ’s website, the terrorist group reiterated its policy of targeting students. In addition to releasing a statement on its website, Saraya al-Quds also broadcast the video below of today’s Qassam launchings.