Can VBA be used to copy and paste data into Webpage?

I am trying to find a solution that might be extremely simple for some and was hoping for some help.

I am a teacher and many of my grades can be exported to Excel from the various tools I use. I then have to manually enter them into our Web-based gradebook.

I have been trying, in vain, to create something with VBA that would allow me to copy a column of grades into the gradebook. Basically it would take an Excel cell, copy the data, and paste it web-based gradebook, press enter to go the next student and repeat the process over and over until all students are done.

I can easily copy all the excel data into an array, but I just can't figure out how to populate that data into the web-based gradebook.

Could anyone provide starting points for me.

Thanks so much!