Form Data:

{
   "education": [
      "bachelor_education"
   ],
   "gender": "gender_male"
}

Schema

{
   "type": "object",
   "properties": {
      "education": {
         "type": "array",
         "items": {
            "type": "string",
            "enum": [
               "all_education",
               "less_than_high_school_education",
               "high_school_education",
               "college_education",
               "bachelor_education",
               "graduate_education"
            ],
            "enumNames": [
               "All",
               "Less Than High School Diploma",
               "High School Diploma",
               "Some College",
               "Bachelor Degree",
               "Graduate Degree"
            ]
         },
         "uniqueItems": true
      },
      "gender": {
         "type": "array",
         "items": {
            "enum": [
               "gender_male",
               "gender_female",
               "gender_both"
            ],
            "enumNames": [
               "Male",
               "Female",
               "Both"
            ]
         },
         "uniqueItems": true
      }
   }
}

UI Schema

{
   "education": {
      "ui:options": {
         "title": "Education",
         "spacing": 1,
         "columns": 1
      }
   },
   "gender": {
      "ui:options": {
         "title": "Gender",
         "icons": [
            null,
            null,
            null
         ],
         "selectedIcons": [
            null,
            null,
            null
         ]
      }
   },
   "ui:submitButtonOptions": {
      "norender": true
   }
}