Answer:
The advantages of long holiday breaks during school are plentiful, but it can also be harmful for the educational process.
Some advantages of having long holidays is relaxation, time with family and friends, extra time to have a nice vacation, and doing regular holiday activities and festivities. Breaks can be helpful for students and staff because it helps relieve stress and rejuvenates them for the rest of the year. Students may also be able to study longer during breaks and be prepared for finals or exams for the end of the semesters, or entrance exams depending on what holiday is being celebrated.
Some disadvantages are missing time in the classroom, it can often make students forgetful, not many students study during breaks, and not many keep up with their learning. Some students are reliable enough to do projects or homework over an extended holiday, but others aren't, and it can really harm their grades. Students may see holiday breaks as full time vacation, and while they should be having fun, they also need to remember that school is important and they should keep learning to help themselves.
Not all breaks are bad, but some students may not be able to keep up with their homework or projects, and that's the disadvantage of holidays.
Hope this helped you out :)