Some embodiments include an integrated assembly having a stack of alternating insulative levels and conductive levels. A pillar of channel material extends through the stack. Charge-storage-material-segments are adjacent to the conductive levels of the stack, and are between the channel material and the conductive levels. The charge-storage-material-segments contain one or more high-k oxides. At least a portion of each of the charge-storage-material-segments is vertically wider than the conductive levels. Some embodiments include methods of forming integrated assemblies.