I have had many clients lament that there is no way to upload their lesson plans that were already completed but now they have to manually enter them in. I have even had a case where the client cancelled Parent Engagement because she said the task was too daunting and made it not worth while.
Here is the account that cancelled fyi https://procaresoftware.lightning.force.com/lightning/r/Account/0011I00001F8b72QAB/view?ws=%2Flightning%2Fr%2FContact%2F0031I0000166iY0QAI%2Fview