« All Events This event has passed. Youth Retreat at Lake Washington High School October 9, 2021 @ 12:30 pm - 3:30 pm « Philharmonia Retreat at Lake Washington High School BSD: No School » Add to calendar Google Calendar iCalendar Outlook 365 Outlook Live Details Date: October 9, 2021 Time: 12:30 pm - 3:30 pm Event Category: Youth Symphony Related Events 2025–2026 Parents’ Meeting September 15 @ 6:00 pm - 8:00 pm Fall Rehearsal #1 September 22 Fall Retreat (Youth Symphony) September 27 @ 12:30 pm - 3:30 pm