Mountainside High SchoolSchool Calendar
2025-26 Academic Calendar
Key dates, holidays, and events for Mountainside High School.
School at a Glance
Upcoming events & academic holidays2025-26 Academic Year
APR
1
Vesak
MAY
4
Seniors' Last Day
MAR
21
Day After Eid al-Fitr
MAR
21
Nowruz
MAR
23
No School
No School - Spring Break
MAR
24
No School
No School - Spring Break
MAR
25
No School
No School - Spring Break
MAR
26
No School
No School - Spring Break
MAR
27
No School
No School - Spring Break
MAR
29
Holy Week
MAR
30
Even Day - Mav Time
MAR
30
Holy Week
MAR
31
Holy Week
MAR
31
Odd Day
APR
1
Even Day - Advisory/Mav Time
APR
1
Holy Week
APR
1
Passover Seder
APR
2
Holy Week
APR
2
Odd Day
APR
2
Passover Seder
APR
3
Even Day - Advisory Only
APR
3
Holy Week, Good Friday
APR
3
Passover
APR
4
Holy Week
APR
4
Passover
APR
5
Major Holiday - Easter
APR
5
Passover
APR
6
Day After Easter
APR
6
No School
No School - Grading Day
APR
6
Passover
APR
7
ACT Day
APR
7
Passover
APR
8
Odd Day
APR
8
Passover
APR
9
Even Day - Ext 1/2
APR
9
Passover
APR
10
Odd Day
APR
12
Orthodox Easter
APR
13
Even Day - Ext 3/Advisory
APR
14
Odd Day
APR
14
Vaisakhi
APR
15
Even Day - Advisory Only
APR
16
Odd Day
APR
17
Even Day - Ext 5/6
APR
17
Principal's Coffee (Virtual) - Apr 17
APR
20
No School
No School - Staff Development Day
APR
21
Odd Day
APR
22
Even Day - Ext 7/8
APR
23
Odd Day
APR
23
Superintendent's Coffee Chat
APR
24
Even Day - Advisory Only
APR
27
Odd Day
APR
28
Even Day - Ext 1/2
APR
29
Odd Day
APR
30
Even Day - Advisory/Mav Time
MAY
1
Odd Day
MAY
1
Vesak
MAY
2
Prom
MAY
4
Even Day - Ext 3/Advisory
MAY
5
Odd Day
MAY
5
Budget Committee Meeting
MAY
6
Even Day - Ext 5/6
MAY
7
Odd Day
MAY
7
Superintendent's Coffee Chat
MAY
8
Even Day - Ext 7/8
MAY
10
Mother's Day (Mexico)
MAY
11
Odd Day
MAY
12
Even Day - Mav Time
MAY
13
Odd Day
MAY
14
Even Day - Ext 1/2
MAY
15
Odd Day
MAY
15
Principal's Coffee (In-Person)
MAY
18
Even Day - Ext 3/Advisory
MAY
19
Odd Day
MAY
19
Budget Committee Meeting
MAY
20
Even Day - Ext 5/6
MAY
21
Odd Day
MAY
21
Shavuot
MAY
22
Even Day - Ext 7/8
MAY
22
Shavuot
MAY
23
Shavuot
MAY
25
No School
No School - Memorial Day
MAY
26
Odd Day
MAY
26
Major Holiday - Eid al-Adha - Begins at Sunset
MAY
27
Even Day - Mav Time
MAY
27
Major Holiday - Eid al-Adha
MAY
28
Day After Eid al-Adha
MAY
28
Odd Day
MAY
29
Even Day - Advisory Only
JUN
1
Odd Day
JUN
2
Even Day - Mav Time
JUN
3
Odd Day
JUN
3
Seniors' Last Day of Classes
JUN
4
Even Day - Mav Time
JUN
4
Seniors' Last Day
JUN
5
Odd Day
JUN
5
Graduation
JUN
8
Even Day - 2nd Opportunity
JUN
9
Odd Day - Half Day Schedule 1st & 3rd Opportunities
JUN
10
Even Day - Half Day Schedule 6th & 8th Opportunities
Partner TipEarly dismissal days and parent-teacher conferences are often updated 2 weeks in advance. Check back regularly to stay ahead of the schedule!