Purpose: The purpose of this paper is to explore existing and desired methodologies for systematic quality work to promote quality in preschools from the principal's perspective. Design/methodology/approach: A collaborative approach was used in this research project, and principals were asked to complete portfolio assignments. Their answers to those portfolio assignments were analysed by the research team and subsequently compared to total quality management values. Findings: Existing and desired methodologies for systematic quality work are presented and sorted into 13 and 17 groups, respectively. The principals desire four times more methodologies than they are presently using to promote systematic quality work, and the results show that they must extend their methodologies to support TQM values. Research limitations/implications: This research is based on answers collected from 18 principals in one municipality in Sweden. Practical implications: The use of the cornerstone model provides a framework to illustrate the application of TQM in preschools. Originality/value: Principals struggle to find time for systemic quality work. The presented results can be used to work systematically with quality in preschools and other organizations.