RIYADH/DAMMAM/JEDDAH: International Indian schools in Riyadh and Dammam have reported outstanding results at the All-India Senior Secondary Exam (Grade XII) conducted by the Central Board of Secondary Education (CBSE), New Delhi, whose results were announced yesterday. While the Dammam school (IISD) stood first in terms of the percentage of passes, the Riyadh school (IISR) made history by securing all the three top positions in terms of highest percentage of marks in all streams cumulatively.