Database schema:
CREATE TABLE Students (
  student_id NUMBER PRIMARY KEY,
  bio_data TEXT,
  student_details TEXT
);
CREATE TABLE Transcripts (
  transcript_id NUMBER PRIMARY KEY,
  student_id NUMBER,
  date_of_transcript TIME,
  transcript_details TEXT,
  FOREIGN KEY (student_id) REFERENCES Students(student_id)
);
CREATE TABLE Behaviour_Monitoring (
  behaviour_monitoring_id NUMBER PRIMARY KEY,
  student_id NUMBER,
  behaviour_monitoring_details TEXT,
  FOREIGN KEY (student_id) REFERENCES Students(student_id)
);
CREATE TABLE Addresses (
  address_id NUMBER PRIMARY KEY,
  address_details TEXT
);
CREATE TABLE Ref_Event_Types (
  event_type_code TEXT PRIMARY KEY,
  event_type_description TEXT
);
CREATE TABLE Ref_Achievement_Type (
  achievement_type_code TEXT PRIMARY KEY,
  achievement_type_description TEXT
);
CREATE TABLE Ref_Address_Types (
  address_type_code TEXT PRIMARY KEY,
  address_type_description TEXT
);
CREATE TABLE Ref_Detention_Type (
  detention_type_code TEXT PRIMARY KEY,
  detention_type_description TEXT
);
CREATE TABLE Student_Events (
  event_id NUMBER PRIMARY KEY,
  event_type_code TEXT,
  student_id NUMBER,
  event_date TIME,
  other_details TEXT,
  FOREIGN KEY (event_type_code) REFERENCES Ref_Event_Types(event_type_code),
  FOREIGN KEY (student_id) REFERENCES Students(student_id)
);
CREATE TABLE Teachers (
  teacher_id NUMBER PRIMARY KEY,
  teacher_details TEXT
);
CREATE TABLE Student_Loans (
  student_loan_id NUMBER PRIMARY KEY,
  student_id NUMBER,
  date_of_loan TIME,
  amount_of_loan NUMBER,
  other_details TEXT,
  FOREIGN KEY (student_id) REFERENCES Students(student_id)
);
CREATE TABLE Classes (
  class_id NUMBER PRIMARY KEY,
  student_id NUMBER,
  teacher_id NUMBER,
  class_details TEXT,
  FOREIGN KEY (teacher_id) REFERENCES Teachers(teacher_id),
  FOREIGN KEY (student_id) REFERENCES Students(student_id)
);
CREATE TABLE Students_Addresses (
  student_address_id NUMBER PRIMARY KEY,
  address_id NUMBER,
  address_type_code TEXT,
  student_id NUMBER,
  date_from TIME,
  date_to TIME,
  FOREIGN KEY (address_type_code) REFERENCES Ref_Address_Types(address_type_code),
  FOREIGN KEY (address_id) REFERENCES Addresses(address_id),
  FOREIGN KEY (student_id) REFERENCES Students(student_id)
);
CREATE TABLE Detention (
  detention_id NUMBER PRIMARY KEY,
  detention_type_code TEXT,
  student_id NUMBER,
  datetime_detention_start TIME,
  datetime_detention_end TIME,
  detention_summary TEXT,
  other_details TEXT,
  FOREIGN KEY (detention_type_code) REFERENCES Ref_Detention_Type(detention_type_code),
  FOREIGN KEY (student_id) REFERENCES Students(student_id)
);
CREATE TABLE Achievements (
  achievement_id NUMBER PRIMARY KEY,
  achievement_type_code TEXT,
  student_id NUMBER,
  date_achievement TIME,
  achievement_details TEXT,
  other_details TEXT,
  FOREIGN KEY (achievement_type_code) REFERENCES Ref_Achievement_Type(achievement_type_code),
  FOREIGN KEY (student_id) REFERENCES Students(student_id)
);

Question: What are the biographical data and the date of transcript issuance of each student?
SQL: SELECT T1.bio_data ,  T2.date_of_transcript FROM Students AS T1 JOIN Transcripts AS T2 ON T1.student_id  =  T2.student_id

Question: Find the biographical data and event date for students who participated in any events.
SQL: SELECT T1.bio_data ,  T2.event_date FROM Students AS T1 JOIN Student_Events AS T2 ON T1.student_id  =  T2.student_id

Question: Count the number of students who have a detention record.
SQL: SELECT count(DISTINCT student_id) FROM Detention

Question: What are the starting time and ending time of each detention record?
SQL: SELECT datetime_detention_start ,  datetime_detention_end FROM Detention

Question: What are the ids and details of the students who take 2 courses?
SQL: SELECT T1.student_id ,  T1.student_details FROM Students AS T1 JOIN Classes AS T2 ON T1.student_id  =  T2.student_id GROUP BY T1.student_id HAVING count(*)  =  2

Question: Which students have 'Suite' as a substring in their details? Give me their biographical information.
SQL: SELECT bio_data FROM Students WHERE student_details LIKE '%Suite%'

Question: How many courses do students take at most? Also find the id of the student who takes the most courses.
SQL: SELECT count(*) ,  student_id FROM Classes GROUP BY student_id ORDER BY count(*) DESC LIMIT 1

Question: Find the biographical data and details for students whose student loan is above the average amount.
SQL: SELECT T1.bio_data ,  T1.student_details FROM Students AS T1 JOIN Student_Loans AS T2 ON T1.student_id  =  T2.student_id WHERE T2.amount_of_loan  >  ( SELECT avg(amount_of_loan) FROM Student_Loans )

Question: What is the code and description of the most common student address type?
SQL: SELECT T1.address_type_code ,  T2.address_type_description FROM Students_Addresses AS T1 JOIN Ref_Address_Types AS T2 WHERE T1.address_type_code  =  T2.address_type_code GROUP BY T1.address_type_code ORDER BY count(*) DESC LIMIT 1

Question: Show the biographical information of the students whose details include the substring 'Suite'.
SQL: SELECT bio_data FROM Students WHERE student_details LIKE '%Suite%'

Question: Which students take 2 courses? List student id and details.
SQL: SELECT T1.student_id ,  T1.student_details FROM Students AS T1 JOIN Classes AS T2 ON T1.student_id  =  T2.student_id GROUP BY T1.student_id HAVING count(*)  =  2

Question: What are the start time and end time of addresses for the students who receive 2 transcripts?
SQL: SELECT date_from ,  date_to FROM Students_Addresses WHERE student_id IN ( SELECT student_id FROM Transcripts GROUP BY student_id HAVING count(*)  =  2 )

Question: For each student, find the student id, student biographical data, and the number of courses he or she takes.
SQL: SELECT T1.student_id ,  T1.bio_data ,  count(*) FROM Students AS T1 JOIN Classes AS T2 ON T1.student_id  =  T2.student_id GROUP BY T1.student_id

Question: List the detail and id of the teacher who teaches the most courses.
SQL: SELECT T1.teacher_details ,  T1.teacher_id FROM Teachers AS T1 JOIN Classes AS T2 ON T1.teacher_id  =  T2.teacher_id GROUP BY T1.teacher_id ORDER BY count(*) DESC LIMIT 1

Question: Which students not only got the most common result but also got a result obtained by 3 students in behaviour monitoring? List the student's biographical data and details.
SQL: SELECT T1.bio_data ,  T1.student_details FROM Students AS T1 JOIN Behaviour_Monitoring AS T2 ON T1.student_id  =  T2.student_id WHERE T2.behaviour_monitoring_details IN ( SELECT behaviour_monitoring_details FROM Behaviour_Monitoring GROUP BY behaviour_monitoring_details ORDER BY count(*) DESC LIMIT 1 ) INTERSECT SELECT T1.bio_data ,  T1.student_details FROM Students AS T1 JOIN Behaviour_Monitoring AS T2 ON T1.student_id  =  T2.student_id WHERE T2.behaviour_monitoring_details IN ( SELECT behaviour_monitoring_details FROM Behaviour_Monitoring GROUP BY behaviour_monitoring_details HAVING count(*)  =  3 )

Question: What are the achievement detail and the type description of each achievements?
SQL: SELECT T1.achievement_details ,  T2.achievement_type_description FROM Achievements AS T1 JOIN Ref_Achievement_Type AS T2 ON T1.achievement_type_code  =  T2.achievement_type_code

Question: How many students have joined in the most common type of event? List the number, the event type and description.
SQL: SELECT count(*) ,  T2.event_type_code ,  T3.event_type_description FROM Students AS T1 JOIN Student_Events AS T2 ON T1.student_id  =  T2.student_id JOIN Ref_Event_Types AS T3 ON T2.event_type_code  =  T3.event_type_code GROUP BY T2.event_type_code ORDER BY count(*) DESC LIMIT 1