using System;

using System.Text.Json;

using System.Text.Json.Nodes;

​

public class Program

{

    public static void Main()

    {

        string jsonString = @"{

  ""Class Name"": ""Science"",

  ""Teacher\u0027s Name"": ""Jane"",

  ""Semester"": ""2019-01-01"",

  ""Students"": [

    {

      ""Name"": ""John"",

      ""Grade"": 94.3

    },

    {

      ""Name"": ""James"",

      ""Grade"": 81.0

    },

    {

      ""Name"": ""Julia"",

      ""Grade"": 91.9

    },

    {

      ""Name"": ""Jessica"",

      ""Grade"": 72.4

    },

    {

      ""Name"": ""Johnathan""

    }

  ],

  ""Final"": true

}

";

        JsonDocument document = JsonDocument.Parse(jsonString); // Must Dispose.

        JsonElement root = document.RootElement;

        JsonElement studentsElement = root.GetProperty("Students");

        JsonElement semesterElement = root.GetProperty("Semester");

        Console.WriteLine(studentsElement.ValueKind);

        Console.WriteLine(studentsElement[1]);

        Console.WriteLine(studentsElement[0]);

        Console.WriteLine(studentsElement[0].GetProperty("Name"));

    }

}