Promoting Inclusive Educational Environments for Children with Autism and Other Social-communication Challenges: Preschool Class and Primary School

The APERS-Fk/L-SE is a rating scale designed to examine primary school program quality for autistic students in Sweden. It contains 10 domains including areas such as students' personal independence and competence, and challenging behaviors. The scale consists of 59 items rated on a five-point Likert-scale (1= low quality - 5 = high quality) resulting in individual item scores, subdomain scores, domain scores and a total score.

The HIFAMS is a questionnaire designed to assess the happiness and subjective well-being of children in school. It is to to be completed by all children in all participating classrooms in the study. The questionnaire is composed of seven questions which asks children how they feel about school life, which are scored using a three-point Likert "face" scale (sad face, neutral face, happy face).

the ICF Core Sets for Autism is a questionnaire for parents to complete about their children. It contains a number of statements about their children's body functions, activities and participation, and contextual factors that may affect their children's functioning rater on a Likert-scale from either 0 to 10, or -5 to 5 (contextual factors), where higher ratings indicate higher levels of functioning and participation.

The Children's self-regulation and academic behavior questionnaire is designed for teachers to rate children's self-regulation and academic behavior skills in various situations in the classroom, rated on a five-point Likert scale from 0 to 4, across 11 items, where higher ratings indicate more skills and better self-regulation.

Teachers' global impression of the child in school during the latest week. Rated on a four-point Likert scale from 0 to 3, across four items, where higher ratings indicate more well-being, participation, engagement and adaptive behaviors.

The Teachers' Stress Scale is a questionnaire designed for teachers to complete about their perceived work-related stress. It consists of five items, and is rated on a six-point Likert scale from 0 to 6 where higher ratings are associated with more stress.

The Autism Self-Efficacy Scale for Teachers is a questionnaire for teachers to complete about their perceived self-efficacy for supporting students with ASD and socio-communicative challenges in their classroom. It consists of 28 items, and is rated on a six-point Likert scale from 0 to 5. Higher ratings indicate more self-efficacy.

The Teacher Work Satisfaction Questionnaire is designed for teachers to complete about their work satisfaction. It contains three items that are rated on a six-point Likert scale from 0 to 5, where higher ratings indicate more work satisfaction,

A scale designed to asses the social validity of the procedures, goals and outcomes of the study by participating school staff. It consists of 12 items rated on a Likert scale from 0 to 5, where higher ratings indicate higher levels of perceived social validity.

The SRS-2 is a scale designed to identify the presence and severity of social impairment within the autism spectrum and to differentiate it from that which occurs in other conditions. In the current study used to assess the level of social challenges for the participating "index children" (i.e. children with autism or socio-communicative challenges participating in the study). The scale contains 65 items and is rated by the children's parents. Each item is rated on a scale from 1 to 4, where 1 is "not true" and 4 is "almost always true". Higher scores indicate more severe social impairment associated with autism, while lower scores indicate the opposite.