I went to an explanation for the graduate school

I went to an explanation for the graduate school to Akihabara.
That was very interesting for me and I wonder I could go to the graduate school.

But there is some problem because I have my job.
If I told my company that I want to go,my company people may say "Work hard."
Then I think I couldn't go.

If I told it to my company or not is something difficult for me.