T-SQL Formatting Nested JSON Output

Question

I am using SQL Server 2019. My data has the overlapping values for all rows except 2. I would to be able to flatten this table and output it as JSON.

Schema

---

CREATE TABLE student_data(
     first_name varchar(50),
     last_name varchar(50),
     grade int,
     ID int,
     subject varchar(50),
     teacher varchar(50)
);


INSERT INTO student_data
VALUES ('John', 'Doe', 0, 1000, 'Home Room', 'Parker, Peter')
      ,('John', 'Doe', 0, 1000, 'Math', 'Quest, Jonny')
      ,('John', 'Doe', 0, 1000, 'Reading', 'Gordon, Flash')
      ,('John', 'Doe', 0, 1000, 'History', 'Banner, Bruce')
      ,('John', 'Doe', 0, 1000, 'Science', 'Kent, Clark')
      ,('Jane', 'Doe', 0, 2000, 'Home Room', 'Parker, Peter')
      ,('Jane', 'Doe', 0, 2000, 'Math', 'Quest, Jonny')
      ,('Jane', 'Doe', 0, 2000, 'Reading', 'Gordon, Flash')
      ,('Jane', 'Doe', 0, 2000, 'History', 'Banner, Bruce')
      ,('Jane', 'Doe', 0, 2000, 'Science', 'Kent, Clark');

Current Output

---

SELECT *
FROM student_data
WHERE ID=1000;

first_name	last_name	grade	ID	subject	teacher
John	Doe	0	1000	Home Room	Parker, Peter
John	Doe	0	1000	Math	Quest, Jonny
John	Doe	0	1000	Reading	Gordon, Flash
John	Doe	0	1000	History	Banner, Bruce
John	Doe	0	1000	Science	Kent, Clark

SELECT *
FROM student_data
WHERE ID=1000
FOR JSON AUTO;

[
    {"first_name":"John",
    "last_name":"Doe",
    "grade":0,
    "ID":1000,
    "subject":"Home Room",
    "teacher":"Parker, Peter"},
    {"first_name":"John",
    "last_name":"Doe",
    "grade":0,
    "ID":1000,
    "subject":"Math",
    "teacher":"Quest, Jonny"},
    {"first_name":"John",
    "last_name":"Doe",
    "grade":0,
    "ID":1000,
    "subject":"Reading",
    "teacher":"Gordon, Flash"},
    {"first_name":"John",
    "last_name":"Doe",
    "grade":0,"ID":1000,
    "subject":"History",
    "teacher":"Banner, Bruce"},
    {"first_name":"John",
    "last_name":"Doe",
    "grade":0,
    "ID":1000,
    "subject":"Science",
    "teacher":"Kent, Clark"}
]

Desired Output

---

{"first_name":"John",
"last_name":"Doe",
"grade":0,
"ID":1000,
"Home Room":{"teacher":"Parker, Peter"},
"Math":{"teacher":"Quest, Jonny"},
"Reading":{"teacher":"Gordon, Flash"},
"History":{"teacher":"Banner, Bruce"},
"Science":{"teacher":"Kent, Clark"}
}