Is Robert Frost Easy to Read?

In my poetry class today, we talked about Robert Frost, looking at a lot of his poems. So, we've all heard 'The Road Not Taken' and 'Fire and Ice.' Right? I'm assuming yes. 

So... today, I learned that what we were taught in school was just the basics. I thought Robert Frost's poetry was easy to read, understand, and analyze. Little did I know how much more there was. Today, I read poems like 'Mending Wall,' 'After Apple Picking,' 'Birches,' and others. Now, I thought these would be easy as well. At first glance, I understood them. However, as my professor taught them to us, there were so many nuances that I missed. There were so many personal connections to the author and so many symbols and connections between poems. There were also religious undertones, despite Frost being an agnostic. 

I realized that even the easiest poems have a lot to think about. For example, even 'The Road Not Taken' is unclear in the ending, according to my professor. That made me pause. I know that poem like the back of my hand, but he said that there was more to it than what we learn in school. 

I then thought about how many other poems and works of literature I called easy, just because I didn't have the full picture.