Nearly 3,000 crimes were reported at or near school and college premises in Northern Ireland in a three-year period.
They include sex offences, assaults and incidents involving drugs.
A total of 2,786 crimes were recorded as occurring at or within the vicinity of educational premises between 2018 and the end of 2020.
Violence accounts for almost half of the total - with 1,307 offences recorded.
The figures were released by the PSNI after a Freedom of Information request by this newspaper.
The PSNI stressed that just because the locations logged were educational premises, it does not mean that the school or college was directly connected to the offence.
Crime may also have occurred outside school hours.
Sexual offences accounted for 343 offences, while 391 incidents of criminal damage were recorded, with 236 theft offences and 159 burglaries.
A total of 120 drugs offences also took place during the three-year period, along with 43 incidents of weapons possession.
Meanwhile, 157 incidents were recorded as "miscellaneous crimes against society" - defined as incidents where there is no direct victim and where the incident does not fit into any other category.
In 2019 a total of 1,063 offences were logged by the PSNI as having taken place at schools or colleges - more than double the number during last year (695) when education institutions were largely closed due to the pandemic.
During 2018 the total number of offences that were recorded was 1,028.
Teaching union NASUWT stressed that while schools are generally safe for pupils, it is important incidents are rigorously investigated when they do occur in educational premises.
Justin McCamphill, NASUWT national official for Northern Ireland, said: "The figures simply indicate that the offence may have occurred in a school or within the vicinity of a school.
"They also may have occurred when a school was open or when it was closed, therefore I wouldn't draw any conclusions from the data."
He added: "In general schools are safe places and in our experience children are safer inside school than outside. However, it is important that when crimes do occur in school that they are investigated in the same manner as if they occurred outside of school."
The Department for Economy (DfE), which has responsibility for higher education, said ensuring the "safeguarding, care and welfare" of learners and staff in the further education (FE) sector is a high priority for it and colleges.
A PSNI spokesperson said the manner in which these offences are recorded "indicates that an offence occurred at or within the vicinity of school or college premises".
"Therefore, the offence may have occurred outside of school or college premises.
"Additionally, the offences may have occurred on school premises outside of school hours and those involved in the offence may not have any connection to the school."
The Education Authority did not respond to a request for comment.