Dear @Lisa Nickerson,
Thank you for your follow-up and for explaining your situation in more detail. I completely understand how important the desktop apps are for your daily teaching work.
In this case, based on your situation, I recommend you check Microsoft’s “Get 12 free months of Microsoft 365” offer, which is available to eligible educators in some regions. This promotion applies to a personal Microsoft 365 subscription, not a school-managed account, and it can provide access to the full desktop apps for personal use.
After 12 months, you will continue to be charged the applicable monthly subscription fees unless you cancel through both your Microsoft and LinkedIn accounts.
Note: You can review the offer details and eligibility requirements on Microsoft’s official website to see if you qualify. For reference: Get 12 free months of Microsoft 365 Premium and LinkedIn Premium Career
Here are step by step I recommend you try:
Step 1: Go to this link: Get 12 free months of Microsoft 365 Premium and LinkedIn Premium Career > Then, click the sign-up button and use your personal account.
Note: If you don't have a personal account, I recommend you create one. You can access to this Microsoft official article and create a new account: How to create a new Microsoft account
Step 2: Confirm the subscription > Click Next
Step 3: Choose your payment method and add your payment information > Click Next
Step 4: This will get you to the Academic verification page > Fill the form to verify your education account by adding your education email address > Then follow the process and provide required information.

I hope the information shared helps point you in the right direction. Please try the steps above and let me know if they work. If not, we can continue working together to narrow this down.
Thank you for your patience and understanding. If you have any further question or stuck on any steps, please feel free to reach out.
I'm looking forward for your reply.
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