Okay, let’s tackle this. So Ellyn Levell is a retired teacher with 47 years of experience, which is extremely high. Typically, teachers with such extensive experience can charge higher rates. However, considering her retired status, I'll assume she's not actively seeking new employment. Retired teachers with 40+ years of experience can charge around $25-$50 per hour, depending on the location and industry. Since she's in Oak Park, Illinois, I'll estimate around $25 per hour, which is a bit on the lower side. Some retired teachers in similar positions might charge more, but this is a conservative estimate based on average rates for retired teachers in the United States.