DALLAS — North Forest Independent School District's $56 million of outstanding debt jumped 13 notches on the Standard & Poor's ratings scale on Wednesday after the district's annexation by the Houston Independent School District.

The upgrade to AA-plus from its previous junk-bond rating of B came after the July 1 annexation became official, ending North Forest's history of financial trouble and poor performance that led the Texas Education Agency to order a merger with Houston ISD.

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