CBSE Class 12 Computer Science (CS) Classes in Kolkata, Online Coaching

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Why this fits a Kolkata student

Most Kolkata schools follow the West Bengal Board (WBBSE/WBCHSE), with CBSE, ICSE/ISC and Cambridge schools alongside. We teach the CBSE, ICSE/ISC, Cambridge IGCSE, GSEB and NIOS computer subjects, not the WBBSE/WBCHSE computer paper itself, so this course suits a Kolkata student in one of those schools.

✓Live classes at Indian Standard Time, never pre-recorded
✓Small batch or one-to-one, so a Kolkata student can interrupt and ask
✓Taught by Kajal Ma'am, teaching computer subjects since 2006
✓Free demo class before any payment

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What CBSE Class 12 Computer Science (CS) covers

3 units, 70 theory marks. Tap any unit to see its topics.

01Unit I: Computational Thinking and Programming - 2 (40 marks)+

Revision of Python basics from Class XI
Functions: scope, parameter passing, passing mutable/immutable objects, returning values, default and keyword arguments
Built-in functions, functions defined in modules (math, random, statistics), user-defined functions
Exception handling using try, except, finally and raise
Introduction to files: types of files (text, binary, CSV); relative and absolute paths
Text files: opening modes (r, r+, w, w+, a, a+), reading/writing (read, readline, readlines, write, writelines), close, seek, tell
Binary files: pickle module - dump() and load(); reading, writing, searching, appending and updating records
CSV files: csv module - reading and writing using reader() and writer()
Data structures - Stack: implementation using lists, push and pop operations

02Unit II: Computer Networks (10 marks)+

Evolution of networking: ARPANET, NSFNET, Internet
Data communication terminologies: concept of communication, sender, receiver, message, channel; bandwidth and data transfer rate (bps)
IP address; switching techniques (circuit, packet)
Transmission media: wired (twisted pair, co-axial, optical fibre) and wireless (microwave, radio, satellite)
Network devices: modem, hub, switch, repeater, router, gateway, NIC
Network topologies: Bus, Star, Tree
Types of networks: PAN, LAN, MAN, WAN
Network protocols: HTTP, FTP, PPP, SMTP, TCP/IP, POP3, HTTPS, TELNET, VoIP
Introduction to web services: WWW, HTML, XML, domain names, URL, website, web browser, web servers, web hosting

03Unit III: Database Management (20 marks)+

Database concepts: relational data model, relation, attribute, tuple, domain, degree, cardinality
Keys: candidate key, primary key, alternate key, foreign key
Structured Query Language (SQL): data types (char, varchar, int, float, date)
DDL commands: CREATE TABLE, ALTER TABLE, DROP TABLE
DML commands: INSERT, UPDATE, DELETE, SELECT
SQL clauses and functions: WHERE, IN, BETWEEN, DISTINCT, ORDER BY, GROUP BY, HAVING, NULL handling
Aggregate functions: MIN, MAX, AVG, SUM, COUNT; math, text and date functions
Joins: equi-join and natural join (Cartesian product of two tables)
Interface of Python with an SQL database: connect, cursor, execute, commit, fetchone(), fetchall(), rowcount

See the full CBSE Class 12 Computer Science (CS) course →

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Students across Kolkata

A student anywhere in Kolkata can take CBSE Class 12 Computer Science (CS) with us — Ballygunge, Bengal, Lake or Martiniere included — because the class is online and there is no centre to travel to. Kolkata sits in West Bengal, where the West Bengal Board (WBBSE/WBCHSE) runs alongside the national boards, so we are asked about both.

Every class is live at Indian Standard Time, in a small batch or one-to-one. Nothing is pre-recorded, so a student in Kolkata asks questions in the moment. Recordings are provided for revision only.

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What students & parents say

4.9/5 from 36 verified reviews.

“

★★★★★

I was able to complete entire syllabus in short duration while preparing for conpetitive exams. Best way to cover entire syllabus. Highly satisfied with teaching method.

Jishnu

Student

“

★★★★★

My experience with Kwickprep has been incredibly rewarding. The course quality, teaching style, and study materials were all excellent. What I found most valuable were the in-depth notes and the extensive collection of question papers available on the website at all times. The notes were clear, concise, and easy to understand, while the question papers gave me the freedom to practice at my own pace and build confidence. The one-on-one classes were especially helpful, allowing me to learn at my own speed and clear all my doubts on the spot. Ma'am explained every concept with great clarity using easy-to-follow PowerPoints, and the additional resources in the app, including year-wise papers, helped me gain a solid understanding of every topic I studied. It was completely worth it, and I'm really grateful for the learning experience I've had with Kwickprep.

Krishnapriya K A

Student

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Frequently asked questions

Do you teach CBSE Class 12 Computer Science (CS) to students in Kolkata?+

Yes. Classes are live and online, so a student in Kolkata joins the same small batch or one-to-one session as anyone else, at Indian Standard Time, taught by Kajal Ma'am.

Which board does this suit in Kolkata?+

How many units are in CBSE Class 12 Computer Science (CS)?+

3 units, carrying 70 theory marks.

Is there a free demo class for Kolkata students?+

Yes. You see a real class before any payment. Message us on WhatsApp and we will arrange it.

Book a free demo for CBSE Class 12 Computer Science (CS) in Kolkata