The problem with manual reminders
Manual reminders work until the week gets busy. A teacher can intend to post the same homework reminder every Monday, but lessons, marking, duties, and meetings can easily push that task aside.
Recurring reminders are useful because they make the classroom routine predictable for students and lighter for teachers.
Option 1: Post reminders manually
Manual posting gives full control, but it also creates repeated admin. It works for occasional reminders, but it is not ideal for weekly homework, regular revision, or repeated form links.
If the same reminder happens on a schedule, manual posting is usually the weakest workflow.
Option 2: Use a personal calendar reminder
A calendar reminder can prompt the teacher to post in Google Classroom, but it still relies on the teacher doing the final publishing step. It reduces forgetting, but it does not remove the repeated task.
This can be enough for rare reminders, but it does not automate the classroom post.
Option 3: Schedule the recurring Google Classroom reminder
Class Add-Ons Scheduler lets teachers prepare the reminder once and schedule it to publish repeatedly in Google Classroom. The post can include instructions, links, attachments, due dates, start dates, and end dates.
For repeated classroom routines, this is usually the most reliable option because the reminder appears where students already look.
Best fit
Use automation for routines that repeat. Keep manual posting for one-off messages that need teacher judgement on the day.