Both iCal and Sunbird allow you to search through your calendar to look for events or word parts. This can be helpful to locate a list of events. you can then click on the name of the event and the event is shown in the context of the calendar.
To search click into the search box (see red circle below) and type a key phrase. Some key terms in use are:
GK = Kindergarten; G1 = 1st Grade, etc. T1 = Trimester 1
iCal
Sunbird
Here is a search result when searching for “t1”