If you'd like to contact a few of your parents without posting to the entire class, you will need to use the messaging feature. (Note: This feature will be turned on in September 2021) Select "Messaging" from the left sidebar on the homepage. Here, you can select either a single parent to message or multiple parents. Just begin typing their names in the recipient field, and they'll appear as an option. If you select more than one recipient, the choice will come up to have a private message or a group message. A private message will create individual threads to each recipient, whereas a group message will create one thread where all recipients can communicate. Here is a help article on direct messaging.
Send A Private or Group Message