In the time frame of 220 days beginning April 22, 2025, school.irtextbook.ir's availability was checked 2 times. Reports indicate that school.irtextbook.ir was inaccessible or encountering problems during all the tests conducted as of November 29, 2025. School.irtextbook.ir was unavailable in 100.00% of evaluations (2 total), with the most recent assessment occurring on October 23, 2025. As of November 29, 2025, no responses were found to have error status based on the replies received. School.irtextbook.ir responded in — seconds on October 23, 2025, its average response time being 0.001 seconds.