May I be honest?
I actually feel we aren't treated like dirt.
"What?!" No, you read that right. We aren't treated like dirt. I'm a farm girl. I guarantee you that dirt is treated better than teachers.
Dirt is indeed evaluated...regularly. If it's not producing as expected then the farmer acts quickly to determine the problem. Does it need fertilizer so that the quality of the plants it's responsible for growing is stronger? Perhaps it needs rest since fallow ground repairs itself over a short period of time. Perhaps it needs additives such as lime or nitrogen since so much is expected of it in such a short time.
Dirt is a limited resource and therefore its value is important to the farmer. He or she values it so much that no expense is spared in its protection and use. Typically, the value of dirt increases and therefore the quality of the dirt is bragged about. Farmers regularly spend thousands of dollars to root out any problems so that dirt's ability to produce is supported and valued by the farmer.
No, dirt is treated better than most teachers. So, you know, take it for what's worth to you.