Research on quality of education has primarily focused entirely on inputs, processes, or outputs either at the school level (Giannini, 2015; Jenjekwa, 2013; Mazise, 2011), pre-school level (Biersteker et al., 2016; Pianta & Hamre, 2009; Slot et al., 2015), tertiary level (Akareem & Hossain, 2012; Madani, 2019), or national level (Hapanyengwi et al., 2018; Kanyongo, 2005; Postlethwaite & Kellaghan, 2008). Unfortunately, there has been no parallel research agenda on the relationships among the inputs, processes, and outputs at all the levels of the education system and how these may contribute to the overall quality of education. This lack of focus on the relationships among the inputs, processes, and outputs at the various levels of the education system may have stemmed partly from a lack of consensus on the conceptualization of quality of education in schools. The aim of this article is to propose a unified conceptual framework for quality of education in schools, which considers systems theory to conceptualize quality of education in schools

Training programs can also be considered broadly: You could look at andragogy, Kolb's experiential learning, leader-member exchange, Donald Schon's reflective thinking, adaptive leadership, and many others. Specifically, in education, you could use social-learning theory by Bandura. Again, what is your aim? The training methods or the content of the program.

Article Kindergarten Teachers' Professional Training and Their Socia...

The main thing: research updated bibliographic references on the topic you are commenting and also, look for experiences that can help you to know what has been done.

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You may consider training teachers using the emotionalized learning experiences format and may use the Broaden-and-Build Theory of positive emotions as a theoretical framework

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Wonderful question

يمكنك متابعة دكتور عبد الله الدنان وما قام به من تدريب للمعلمين في رياض الأطفال في دول الخليج

I agree with David Coker and focusing on andragogy, however, the more contemporary, recent approaches must be examined since work in this area is revolutionizing.