diff --git a/validator/check_dataset.py b/validator/check_dataset.py
new file mode 100644
index 0000000..e5356c3
--- /dev/null
+++ b/validator/check_dataset.py
@@ -0,0 +1,200 @@
+# Cohere For AI Community, Danylo Boiko, 2024
+
+import json
+import argparse
+
+from typing import Union, Literal, Optional
+
+from pydantic import BaseModel, ValidationError, field_validator, model_validator
+from pydantic_core.core_schema import ValidationInfo
+from rich.console import Console
+from rich.panel import Panel
+from rich.syntax import Syntax
+from rich.text import Text
+from rich.tree import Tree
+
+
+class EntrySchema(BaseModel):
+    language: str
+    country: str
+    file_name: str
+    source: str
+    license: str
+    level: str
+    category_en: str
+    category_original_lang: str
+    original_question_num: Union[int, str]
+    question: str
+    options: list[str]
+    answer: int
+    image_png: Optional[str]
+    image_information: Optional[Literal["useful", "essential"]]
+    image_type: Optional[Literal["graph", "table", "diagram", "scientific formula", "text", "figure", "map", "photo"]]
+    parallel_question_id: Optional[tuple[str, int]]
+
+    @staticmethod
+    def _validate_string(value: str) -> str:
+        if not value.strip():
+            raise ValueError("Value cannot be empty or whitespace")
+
+        if value.startswith(" ") or value.endswith(" "):
+            raise ValueError("Value cannot have leading or trailing spaces")
+
+        return value
+
+    @field_validator("language")
+    def validate_language(cls, language: str, config: ValidationInfo) -> str:
+        expected_language = config.context.get("expected_language")
+
+        if language != expected_language:
+            raise ValueError(f"Expected '{expected_language}', but got '{language}'")
+
+        return cls._validate_string(language)
+
+    @field_validator("options")
+    def validate_options(cls, options: list[str]) -> list[str]:
+        for option in options:
+            cls._validate_string(option)
+
+        if len(options) < 2:
+            raise ValueError(f"Expected at least 2 options, but got {len(options)}")
+
+        if len(set(options)) != len(options):
+            raise ValueError("All values must be unique")
+
+        return options
+
+    @field_validator("answer")
+    def validate_answer(cls, answer: int, config: ValidationInfo) -> int:
+        options_count = len(config.data.get("options", []))
+
+        if options_count > 0 and not (0 <= answer < options_count):
+            raise ValueError(f"Expected value from 0 to {options_count - 1}, but got {answer}")
+
+        return answer
+
+    @field_validator("parallel_question_id")
+    def validate_parallel_question_id(cls, parallel_question_id: Optional[tuple[str, int]]) -> Optional[tuple[str, int]]:
+        if isinstance(parallel_question_id, tuple) and isinstance(parallel_question_id[0], str):
+            cls._validate_string(parallel_question_id[0])
+
+        return parallel_question_id
+
+    @field_validator(
+        "country", "file_name", "source", "license", "level", "category_en", "category_original_lang",
+        "original_question_num", "question", "image_png"
+    )
+    def validate_string_fields(cls, value: Optional[str]) -> Optional[str]:
+        return cls._validate_string(value) if isinstance(value, str) else value
+
+    @model_validator(mode="after")
+    def validate_image_data(cls, model: "EntrySchema") -> "EntrySchema":
+        image_data = [model.image_png, model.image_information, model.image_type]
+
+        if any(image_data) and not all(image_data):
+            raise ValueError(
+                "All fields related to image data (prefixed with 'image_') must be specified if any one of them is specified"
+            )
+
+        return model
+
+    class Config:
+        extra = "forbid"
+
+
+class EntryError:
+    def __init__(self, index: int, location: Optional[tuple], message: str) -> None:
+        self.index = index
+        self.location = location
+        self.message = message
+
+    def __str__(self) -> str:
+        message = self.message.removeprefix("Value error, ")
+
+        if self.location:
+            location = str(self.location).strip(",()")
+            return f"Location: {location}, error: {message.lower()}"
+
+        return message
+
+
+class DatasetValidator:
+    def __init__(self, json_file: str, language_code: str) -> None:
+        self.json_file: str = json_file
+        self.json_entries: list[dict] = []
+        self.language_code: str = language_code.lower()
+        self.console: Console = Console()
+        self.errors: list[EntryError] = []
+
+    def validate(self) -> None:
+        self.console.print("Starting validation...", style="green")
+        self.console.print(f"JSON file: {self.json_file}", style="cyan")
+        self.console.print(f"Language code: {self.language_code}", style="cyan")
+
+        if not self._load_json():
+            return
+
+        self._validate_entries()
+        self._print_validation_report()
+
+    def _load_json(self) -> bool:
+        try:
+            with open(self.json_file, "r", encoding="utf-8") as file:
+                entries = json.load(file)
+
+                if not isinstance(entries, list):
+                    raise ValueError("The file must contain a JSON array (list of entries)")
+
+                self.json_entries = entries
+            return True
+        except Exception as e:
+            self.console.print(f"Error loading file {self.json_file}: {e}", style="red")
+            return False
+
+    def _validate_entries(self) -> None:
+        for index, entry in enumerate(self.json_entries):
+            try:
+                EntrySchema.model_validate(entry, context={
+                    "expected_language": self.language_code
+                })
+            except ValidationError as e:
+                self.errors.extend([
+                    EntryError(index, error.get("loc", None), error.get("msg")) for error in e.errors()
+                ])
+
+    def _print_validation_report(self) -> None:
+        if len(self.errors) == 0:
+            return self.console.print("Congratulations, the JSON file is valid!", style="green")
+
+        self.console.print("The following errors were found, fix them and try again:", style="red")
+
+        for error in self.errors:
+            self.console.print(Panel(self._create_error_tree(error), expand=False, border_style="red"))
+
+    def _create_error_tree(self, error: EntryError) -> Tree:
+        entry = self.json_entries[error.index]
+
+        tree = Tree(f"Error in entry with index {error.index}", style="red")
+        tree.add(Text(str(error), style="yellow"))
+
+        question_node = tree.add("Question")
+        question_node.add(Syntax(entry.get("question", "N/A"), "text", word_wrap=True))
+
+        options_node = tree.add("Options")
+        for option_num, option_value in enumerate(entry.get("options", []), 1):
+            options_node.add(f"{option_num}. {option_value}")
+
+        answer_node = tree.add("Answer")
+        answer_node.add(str(entry.get("answer", "N/A")))
+
+        return tree
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--json_file", type=str, required=True, help="Path to the JSON file to be validated")
+    parser.add_argument("--language_code", type=str, required=True, help="The language code for the dataset")
+    args = parser.parse_args()
+
+    validator = DatasetValidator(args.json_file, args.language_code)
+    validator.validate()
diff --git a/validator/requirements.txt b/validator/requirements.txt
new file mode 100644
index 0000000..6376362
--- /dev/null
+++ b/validator/requirements.txt
@@ -0,0 +1,2 @@
+rich
+pydantic
\ No newline at end of file