The conversation between human and AI assistant.
[|Human|] Estimate the grade level of the following text.
[|AI|] The grade level of the input text is approximately 8th grade, according to the Flesch-Kincaid Grade Level test. This readability metric assesses the level of education required to understand written passages based on sentence length, complexity and word length.
[|Human|] 
Estimate the grade level of the following text.