As other commenters are saying, Mississippi children's actual achievement rates are still bottom of the barrel. So while they might be statistically doing better, they're not actually doing better at the moment.
That's not to say that things can't turn around, or that this newfound investment into education might not bear fruit very soon.
But the OP made the choice not to address any of these issues; therefore, the article doesn't seem to have been made in good faith relative to the HN community's expectations.