Oroville Union High 2022-2023 Calendar https://orovilleunionhigh.tandem.co/ Key dates for Oroville Union High. en-us 8/12/22 Teacher Inservice Days https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=241 241-orovilleunionhigh@intand.com 8/15/22 Teacher Inservice Days https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=242 242-orovilleunionhigh@intand.com 8/16/22 First Day of School https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=243 243-orovilleunionhigh@intand.com 9/5/22 Labor Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=224 224-orovilleunionhigh@intand.com 10/10/22 Columbus Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=225 225-orovilleunionhigh@intand.com 10/14/22 End of 1st Quarter (43 days) https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=244 244-orovilleunionhigh@intand.com 10/31/22 Halloween https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=226 226-orovilleunionhigh@intand.com 11/6/22 Daylight Saving Time Ends https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=228 228-orovilleunionhigh@intand.com 11/11/22 Veteran's Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=227 227-orovilleunionhigh@intand.com 11/21/22 - 11/25/22 Thanksgiving Break https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=245 245-orovilleunionhigh@intand.com 11/24/22 Thanksgiving https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=229 229-orovilleunionhigh@intand.com 12/14/22 - 12/15/22 Mid-Term Finals https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=246 246-orovilleunionhigh@intand.com 12/15/22 End of Semester (81 Days) https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=247 247-orovilleunionhigh@intand.com 12/16/22 Teacher Inservice Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=248 248-orovilleunionhigh@intand.com 12/19/22 - 1/2/23 Winter Break https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=249 249-orovilleunionhigh@intand.com 12/25/22 Christmas Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=230 230-orovilleunionhigh@intand.com 1/1/23 New Year's Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=231 231-orovilleunionhigh@intand.com 1/16/23 Martin Luther King Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=232 232-orovilleunionhigh@intand.com 2/14/23 Valentine's Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=233 233-orovilleunionhigh@intand.com 2/17/23 Lincoln's Birthday https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=250 250-orovilleunionhigh@intand.com 2/20/23 President's Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=234 234-orovilleunionhigh@intand.com 3/10/23 End of 3rd Quarter (46 Days) https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=251 251-orovilleunionhigh@intand.com 3/12/23 Daylight Saving Time Begins https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=235 235-orovilleunionhigh@intand.com 3/17/23 St. Patrick's Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=236 236-orovilleunionhigh@intand.com 4/9/23 Easter https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=237 237-orovilleunionhigh@intand.com 4/10/23 - 4/14/23 Spring Break https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=252 252-orovilleunionhigh@intand.com 5/5/23 Cinco De Mayo https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=238 238-orovilleunionhigh@intand.com 5/29/23 Memorial Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=239 239-orovilleunionhigh@intand.com 5/30/23 - 6/1/23 Finals https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=253 253-orovilleunionhigh@intand.com 5/30/23 Graduation Day/Promotion Ceremonies: Oroville Adult Education-CTC https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=255 255-orovilleunionhigh@intand.com 5/30/23 Graduation Day/Promotion Ceremonies: Prospect High School https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=256 256-orovilleunionhigh@intand.com 5/31/23 Graduation Day/Promotion Ceremonies: ATC Promotion Ceremony https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=257 257-orovilleunionhigh@intand.com 6/1/23 Graduation Day/Promotion Ceremonies: Oroville High School https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=258 258-orovilleunionhigh@intand.com 6/2/23 Graduation Day/Promotion Ceremonies: Las Plumas High School https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=259 259-orovilleunionhigh@intand.com 6/2/23 Teacher Inservice Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=254 254-orovilleunionhigh@intand.com 7/4/23 Independence Day https://orovilleunionhigh.tandem.co/index.php?type=key_date&action=details&id=240 240-orovilleunionhigh@intand.com